Alibaba.com offers 1,117 polymer insulator rod products. such as free samples. There are 1,117 polymer insulator rod suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of polymer insulator rod respectively. Polymer insulator rod products are most popular in North America, Domestic Market, and South America. You can ensure product safety by selecting from certified suppliers, including 776 with ISO9001, 230 with ISO14001, and 149 with OHSAS18001 certification.